JPS61294031A - 掘削機の油圧回路 - Google Patents

掘削機の油圧回路

Info

Publication number
JPS61294031A
JPS61294031A JP60132020A JP13202085A JPS61294031A JP S61294031 A JPS61294031 A JP S61294031A JP 60132020 A JP60132020 A JP 60132020A JP 13202085 A JP13202085 A JP 13202085A JP S61294031 A JPS61294031 A JP S61294031A
Authority
JP
Japan
Prior art keywords
valve
pressure
main
set pressure
switching valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP60132020A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0374290B2 (enrdf_load_stackoverflow
Inventor
Yoshihiro Kusunoki
楠　義裕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP60132020A priority Critical patent/JPS61294031A/ja
Publication of JPS61294031A publication Critical patent/JPS61294031A/ja
Publication of JPH0374290B2 publication Critical patent/JPH0374290B2/ja
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Control And Safety Of Cranes (AREA)
JP60132020A 1985-06-19 1985-06-19 掘削機の油圧回路 Granted JPS61294031A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60132020A JPS61294031A (ja) 1985-06-19 1985-06-19 掘削機の油圧回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60132020A JPS61294031A (ja) 1985-06-19 1985-06-19 掘削機の油圧回路

Publications (2)

Publication Number Publication Date
JPS61294031A true JPS61294031A (ja) 1986-12-24
JPH0374290B2 JPH0374290B2 (enrdf_load_stackoverflow) 1991-11-26

Family

ID=15071640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60132020A Granted JPS61294031A (ja) 1985-06-19 1985-06-19 掘削機の油圧回路

Country Status (1)

Country Link
JP (1) JPS61294031A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01102131A (ja) * 1987-10-16 1989-04-19 Hitachi Constr Mach Co Ltd 油圧式掘削機の油圧回路
JPH0226652U (enrdf_load_stackoverflow) * 1988-08-09 1990-02-21
JPH0226651U (enrdf_load_stackoverflow) * 1988-08-02 1990-02-21
WO1990001588A1 (en) * 1988-08-02 1990-02-22 Kabushiki Kaisha Komatsu Seisakusho Moving speed regulator for hydraulically driven working machines
US6282890B1 (en) 2000-01-21 2001-09-04 Komatsu Ltd. Hydraulic circuit for construction machines
WO2014132732A1 (ja) * 2013-02-26 2014-09-04 カヤバ工業株式会社 アクチュエータユニット

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616736A (en) * 1979-07-19 1981-02-18 Kobe Steel Ltd Hydraulic circuit for hydraulic power shovel
JPS57187863U (enrdf_load_stackoverflow) * 1981-05-27 1982-11-29
JPS5943567U (ja) * 1982-09-08 1984-03-22 株式会社小松製作所 建設機械の作業機油圧回路

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616736A (en) * 1979-07-19 1981-02-18 Kobe Steel Ltd Hydraulic circuit for hydraulic power shovel
JPS57187863U (enrdf_load_stackoverflow) * 1981-05-27 1982-11-29
JPS5943567U (ja) * 1982-09-08 1984-03-22 株式会社小松製作所 建設機械の作業機油圧回路

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01102131A (ja) * 1987-10-16 1989-04-19 Hitachi Constr Mach Co Ltd 油圧式掘削機の油圧回路
JPH0226651U (enrdf_load_stackoverflow) * 1988-08-02 1990-02-21
WO1990001588A1 (en) * 1988-08-02 1990-02-22 Kabushiki Kaisha Komatsu Seisakusho Moving speed regulator for hydraulically driven working machines
US5174190A (en) * 1988-08-02 1992-12-29 Komatsu Mec Corp. Moving speed regulator for hydraulically driven work implement
US5320025A (en) * 1988-08-02 1994-06-14 Kabushiki Kaisha Komatsu Seisakusho Moving speed regulator for hydraulically driven work implement
JPH0226652U (enrdf_load_stackoverflow) * 1988-08-09 1990-02-21
US6282890B1 (en) 2000-01-21 2001-09-04 Komatsu Ltd. Hydraulic circuit for construction machines
WO2014132732A1 (ja) * 2013-02-26 2014-09-04 カヤバ工業株式会社 アクチュエータユニット
JP2014163452A (ja) * 2013-02-26 2014-09-08 Kayaba Ind Co Ltd アクチュエータ
CN104956095A (zh) * 2013-02-26 2015-09-30 萱场工业株式会社 致动器单元
US10150488B2 (en) 2013-02-26 2018-12-11 Kyb Corporation Actuator unit

Also Published As

Publication number Publication date
JPH0374290B2 (enrdf_load_stackoverflow) 1991-11-26

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